Home / 687,997.53-949,911.62-429,990.46

Finding the Fourth Proportional to 687,997.53, 949,911.62 and 429,990.46

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Solution

The fourth proportional to 687,997.53, 949,911.62 and 429,990.46 is: 593,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,997.53 : 949,911.62 = 429,990.46 : x
  2. Step 2: Convert to fraction form
    687,997.53/949,911.62 = 429,990.46/x
  3. Step 3: Cross multiply
    687,997.53x = 949,911.62 × 429,990.46
  4. Step 4: Simplify right side
    687,997.53x = 408,452,929,918.41
  5. Step 5: Solve for x
    x = 408,452,929,918.41/687,997.53
  6. Step 6: Final answer
    x = 593,683.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.